Anomaly:Body - Large

Hi

There is a rule in Cloudflare WAF -
Anomaly:Body - Large - ee922cf00077462d9f2f7330b114b839

What is the default value of this rule. What is the size constraint post which this rule gets triggered ?

And if we use the HTTP request body fields what is the default size cloudflare will inspect the body and can we increase the size if required ?
(http.request.body.raw)

Thanks,
Anwesh